Re: Laptop ACPI poweroff failed after main-c255826 -> main-c255850

On Tue, Jan 12, 2021 at 07:37:28AM -0800, David Wolfskill wrote:
> On Tue, Jan 12, 2021 at 05:31:30PM +0200, Andriy Gapon wrote:
> > On 2021-01-11 14:55, David Wolfskill wrote:
> > > pci3: unknown notify 0x2
> > > ACPI Error: AE_ERROR, Thread 100002 could not acquire Mutex [ACPI_MTX_Caches] (0c4) (20201113/utmutex-434)
> > 
> > Looks like that was some sort of a race or otherwise transient condition
> > that lead to the _PTS (prepare-to-sleep) failure.
> > 
> > > ACPI Error: Aborting method \_PTS due to previous error (AE_NO_MEMORY) (20201113/psparse-689)
> > > acpi0: AcpiEnterSleepStatePrep failed - AE_NO_MEMORY
> > ....
> 
> That's certainly plausible -- as I noted a bit earlier today, there was
> no recurrence  after this morning's main-c255850-g16079c7233be ->
> main-c255894-g8b1839548750 update.
> 
> Should I encounter a recurrence, I will plan to get another screenshot,
> then bring the machine back up and re-try the poweroff (and then report
> my findings).
> ....

I had a recurrence this morninig, after the update from:

FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #120 main-c255894-g8b1839548750-dirty: Tue Jan 12 05:23:50 PST 2021     root_at_g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY  amd64 1300134 1300134

to:

FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #121 main-c255921-gec2700e01532-dirty: Wed Jan 13 05:06:22 PST 2021     root_at_g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY  amd64 1300135 1300135


New swcreenshot is in https://www.catwhisker.org/~david/FreeBSD/head/c255921;
the previous one is in https://www.catwhisker.org/~david/FreeBSD/head/c255850.

They look quite similar to me.

After grabbing the screenshot, I rebooted again, but the poweroff
just worked normally on re-try.

I believe that this is evidence in favor of a "race condition" diagnosis.
(In precisely what, I don't know,)

Peace,
david
-- 
David H. Wolfskill                              david_at_catwhisker.org
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